Tack-driving machine.



Patented July 3|, |900.

2 Sheets-Shget I.

INVENTUR afww www?? A`. F. 'PRESTDIL (Applicationled Dec. 11, 1897.)

TACK DRIVING MACHINE.

(No Model.)

UNITED STATES PATENT CEErcE.

y BUSELL LASTIN G MACHINE COMPANY, OF'SAME PLACE.

TACK-DRIVING M'Ac'HiN sf..

' SPECIFICATION forming partei' Letters Patent No. 654,840, dated July31, 1900.

' Application tiled December 11, 1897. Serial No. 661,573. (No model.)

To all whom it may concern:

Be it known that I, ALBERT F. PRESTON, of Boston, in the county7 ofSuffolk and State' of Massachusetts, have invented certain new anduseful Improvements in vTack-Driving Machines, of which the following isa specification. Y

This invention has relation to tackers or tack-driving machines by meansof which tacks may be driven into boots or shoes for securing the uppersto the soles thereof.

One of the principal objects of the invention is-to provide a reservoiror delivery-box to be employed in connection with abandoperated machinebymeans of which a steady and uniform feed of tacks 'totlea'c'tion ofthe driver may be maintained without any appreciable eort on the part ofthe operator.

l Another object of the invention is to provide against a tack beingdriven at the wrong angle into the work and also to permit of its beingdischarged lfreely when presented im.- properly tothe action of thedriver, while at the same time the escape of a properly-presented tackis prevented.

To attain these objects the invention'may be embodied in a machine whichpossesses certain features of construction and arrangei ment of parts,such as illustrated upon the` drawings and described in the followingspecication.

Similar letters of reference indicate like parts or features whereverthey occur.

Of the drawings, Figure 1 represents in side elevation amachine'embodying the invention. through the same. Fig. 3 represents asection with the parts'enlarged. In thisigure the tack is in positiontobe driven into the work. Fig. Lt represents a similar section with thedriver depressedafter having driven a tack into the work. Figs. 5 anddrepresent sections on the lines 5 5 and 6 6, respectively, o f Figs. 3and 4. Fig. '7 represents a crosssection on the line 7 7 of Fig. 5.Fig.` 8 represents in perspective the tack-reservoir or delivery-boxwith a portion of the sides broken a' and being adapted toreciprocate'in the Fig. `2 represents a vertical section.

tubularcasingb. Aspring b', bearingagainst a shoulder in the interiorofthe easing and against an annular ange on the driver-bar, holds thedriver normally in a raised or inoperative position,with the saidshoulderagainst a ferrule b2, screwed upon the upper open end ,of thecasing and through which the driver-` sented one vby, .one..thereto... Aknob a3 is' pinned upon the upper end of the driver-bar to afford abearing-surface for the hand of the `operator or the mall'et with whichhe strikes it a blow 'to drive a tack into the work.

A handle c, 'having the upper bar c encirf cling the tubular casingbelowthe ferrule b2 andthe lower bar c2 secured to the-lower end of thecasing by a screw c3, is employed for the purpose of holding the casingat the proper angle to the work, and in a slot in the said bar o2 isfulornmed a lever o4, which is beveled land serrated at its free end c5to coact with the beveled end h4 of thecasing and form the movable jawof a pair of pincers for' grasping the edge of the upper and drawing ittaut over the last before a tack is. driven into itkry `The movable jawis normally held away from the stationary jaw by a spiral spring c6, butis locked thereagainst by a lever' d, pivoted at dtoa lugin the handleand having a" 'roller d2, rolling upon'a cam-track on the said leverci.` A spring d3 holds the lever d in its inoperative position, fromwhich it may be easily drawn by the fingers of the hand grasping thehandle c. Y Y

The lower end of the vcasing b below the throat b5 is provided with twoslots atright angles to each otherfor a purpose to be described,andsecured between lthe wings Z251 projecting therefrom, is the chute orraceway which conducts the tacks to the action of the driver. The saidchute or raceway consists of two parallel inclined bars e, separatedsuffic'iently to receive a line of tacksbetween them,` with their headsresting upon the shoulders e thereof. x At'the lower end the IOO ` rochute-bars e.

shoulders lof rthe bars are curved to present thel tacks one by one tothe driver, with their nedian lines in alinement with its median ine.

Arranged in those slots in the lower` endet the casing which aretransverse' to the raceway are the separable guide-blocks f heldtogether by thev U spring f', having itsends passed into grooves j2 f2in the ends ofthe blocks or members of the yielding guides are iiushwiththe lower end of the chute, so that the shank of the lowermost tack inthe'race-4 way passes between theblocks and the head. r5- thereof restsupon the upper edges of vthe blocks, as shown in Figs. 3 and 5..4Whenthe driver descends, it engages the tack and forces it between themembers of the yielding guide to the work, the said members separatingto A2o permit its passage and guiding it properlyin lits descent.

A yielding stop g is placed in the lower end of the casing between theside bars of the chute or raceway and is recessed to form a shoulder g',iiush with the top edges z5 of the members fof the yielding guide. It

is'placed'in front of the passage-way in the chute or raceway and slidesin the lines thereof, being supported and limited in its movement by apin or rivet g. Abent -leaff 3o spring g3, secured to the end of the barc2 of the handle, holds the stop iii' its normal posi-` tion, with theshoulder g2 projecting into the path of the driver, so that the tackwill be sup" l ported and prevented from sliding from the.

` 35 raceway through the members of the yielding guide. When the driverengages the tack,

v the stop is slid bodily in the lines of the chute I out of the\wa`y ofthe tack and the driver, its

vdierent positions being portrayed in Figs. 3

4eand 4, respectively.

A bar"h\is arranged over the line of tacks in the chute and is provided-in its outer end with a slot to receive a pin h', passed through theparallel side bars of said chute, whereby 45 it may slide in the linesot the chute toward 'and from the`driver, its lower end being beveledand held in the,path of the driver `by a bent leaf-spring h2, secured tothe outside of the chute and passed through an aperture in the latterinto a groove or slot in the said bar h. This bar is over the heads ofall the tacks in the raceway and normally engages the tack xin theyielding guide; but when the driver is depressed it is thrust backwardand down- Ward and engages the'next tack to hold it aga'nst movementuntil the driver returns.

lT Ve voblong reservoir or tack-box 7l, from which the tacks aredelivered to the raoeway, is secured to the side bars of the latter by"o sore s (shown in dotted lines in Fig. 2) passed ``\through'aperturesifi in the end of the reservoir,"-a nd its'bottom or door is dividedinto two \portions,

n the outer portion 2 sloping toward the end-of the racew-ay and theother 6.5 portion t3 sloping outwardly at anangle thereto. The sai-dlower portion terminates in a wall i, which extends nearly to thetopiment through an aperture The upper edges of the guidewardly, saidupper edges of.

.through the aperture i5 to slide into the outer compartment.

ltimes to aid the flow of the tacks.

of the box, said wall dividing said box into two compartments, thetacksfpassin'g from the outer compartment to the innercompart whichconverges, as shownin Fig. 8, to guide the shanks of the tacks'into thegroovle'er way 6, which is connected tothe raceway-by the groove Q17,formed bythe ribs te fis, extending' upfrom the bottom i. A shoulder orstopt'9 is formed in the upperedge of each rib to prevent the the ribsbeing flush with the-surface of the bottom f of the4 box. The top of thebox` is formed with Aan aperture Ai319, closed by a pivoted'door t and Ythrough which tacksare introduced into the compartments therein. As thetool is used the tacks pass from the outer compartment and are guided tothe grooves 'L6 t7, those tacks which do not .properly presentthemselves fallingon either side of the ribs onto the upwardly. andrearwardly inclined bottom fis. WhenA the overiiow-*comp'artments oneither side of the ribs are full, the .tool is inclined to cause thetacks last, using the rough-headed screw lc, resting on the sole, as afulcrum. Then with his other hand or 'a malletthe driver is depressed,and engaging a tack drives it between .the members of the yielding guideinto the work. Ocl

casionally he tilts his hand to cause the loose tacks to iiow back intothe outer compart ment in the. tack-reservoir, as described.

It will be noticed on examining Figs. 4 and 5 that the slot e10betweenthe side bars of the chute at the lower end thereof is wideenough to permit the tool to be drawn away'from the work horizontally orin lines parallel thereto, even if the tacks be driven partially intothe work, as shown in Fig. 5. Hencev if by any chance a tack should beimproperly `presented to the action of the driver it will be dischargedthrough the slot without injuring or clogging the tool, although as amatter of fact the yielding stop coacting with the vmembers of theyielding guard conducts the tack properly to the work. If the stop beomitted and atack rest at an incli'nation'wth its head on the upperedgesof the guide mem bers, the driver is liable to strike it first on oneside of 'the head and eject it from the throat sidewise; but when thestop is present this spitting. or'ejeeting'of the tacks is prevented. Itwill also be observed that the castacks from sliding back-t Thus 1.o ingto set forth all ing and the guideway for the tacks extend below theslots in which theseparableguide members oi blocks move, and thereforethere is no tendency to disturb the position of the lower end of thetool or machine on the work by the lateral movements of the said blocks.

Having thus explained the nature of the invention and described a way ofconstructing and using the same, though without attemptof the forms inwwhich it may be -made or all o f the modes of Vits use, I declare thatwhat Iclaim is 1. A tack-driving machine, comprising a driver, a casinghaving a guideway for the r'eciprocations of said driver aud'havingslots,

separable guide members between which the tacks may be forced one at atimeby the driver, said guide members being mounted /yieldingly in saidslots, a chute. or raceway zo for supplying tacks to the guide members,a

yielding stop g having a shoulder g flush with the top edges of theguide members, and a spring g3 normally holding the shoulder in the Ipath of the driver.

z5 2. A tack-driving machine, comprising a driver, achnte or raceway forsupplying tacks -to the action of the driver, a bar overthe line oftacks in the raceway and movable longitudinally toward and from thedriver, said bar having a beveled end rejecting in the path of thedriver, where y said -1 bar is arranged to alternately engage the tackto be directly acted` op 4by the driver and the tack next thereto. i

3. A tack box or reservoir for delivering tacks to the raceway of atack-driving mabottoms sloping upward from the ends to the center of thebox, said compartments being connected by an aperture, and there being agroove leading from the outer compartment to the raceway. In testimonywhereof I have name to this specification, in the presence of twosubscribing witnesses, this 9th day of December, A. D. 1897.

ALBERT F. PRESTON. Witnesses:

A. D. HARRISON, P. W. lPnzrlznttr.

chine, divided into two compartments vhaving signed my

